The annual competition for professional and amateur astrophotographers released its shortlisted images, which capture the ...

The comet 3I/ATLAS is the third confirmed interstellar object and is likely 3 billion years older than our own solar system.

A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million when it goes up for ...

The whopping 25-kilogram Martian rock will be sold at a special natural history-themed auction at Sotheby's in New York this ...

Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.